German : 6 classes of pronouns
1. Personal Pronouns ( I, you, us)
2. Reflexive Pronouns (themselves, myself, himself)
3. Relative Pronouns (which, who )
4. Interrogative Pronouns ( what? Whose?)
5. Indefinite Pronouns ( one, somthing)
6. Demostrative Pronouns (this, that, one)
The normal word to use for "you" is Sie, always written with a Capital letter in ALL its cases (Sie, Sie, Ihere, Ihnen).